Codes will not work on all items, so you'll need to root around eBay like a truffle pig and find what's eligible.

Use codes:

PTOP3

PTOP5

PTOP7

PTOP10

Full T&Cs:

https://pages2.ebay.com.au/Buyer_coupons/ptop3


https://pages2.ebay.com.au/Buyer_coupons/ptop5


https://pages2.ebay.com.au/Buyer_coupons/ptop7


https://pages2.ebay.com.au/Buyer_coupons/ptop10